Gf sister (Romantically Yours)

Mark's heart raced as he leaned against the cool tile of the shower wall, the steam enveloping him like a thick fog. The water cascaded down his chiseled chest, tracing the contours of his defined abs, as he tried to shake the tension from his body. He was a man of appetite, a dominant force in every aspect of his life, yet when it came to sex, he was still an uncharted territory, a dormant volcan...